Caltex - Omahu Rd is a service station listed as a car wash at 1108 Omahu Rd, Twyford, Hastings, with a Google rating of 4.4. It has a station page on the Caltex website, which is a good place to check what is on site.
According to that website, Caltex has been fuelling motorists and businesses in New Zealand since 1936, and the brand is operated by Z Energy under licence from Chevron International. The site says most Caltex service stations stock Caltex Havoline products for petrol engines and Caltex Delo products for diesel engines such as utes, 4WDs and trucks. It describes an online recommender where you enter your rego or vehicle model to get the right oil for a car, motorcycle, boat, lawnmower or chainsaw, then find a stockist. If you are using a car wash at a service station, check the type of wash and payment options at the site, and use the oil recommender before you top up.
For drivers in Twyford and around Hastings, Caltex on Omahu Road is a place to fill up and look after the vehicle.